Optical properties of type-I and II quantum dots

AUTOR(ES)

Iikawa, F., Godoy, M. P. F., Nakaema, M. K. K., Brasil, M. J. S. P., Maialle, M. Z., Degani, M. A., Ribeiro, E., Medeiros-Ribeiro, G., Carvalho Jr., W., Brum, J. A.

FONTE

Brazilian Journal of Physics

DATA DE PUBLICAÇÃO

2004-06

RESUMO

This paper focuses on recent results on the optical properties of self-assembled quantum dots involving type-I InGaAs/GaAs and type-II InP/GaAs interfaces. In the first part, we focus on the InGaAs/GaAs quantum dots, that were used to study the influence of a two-dimensional electron gas on the optical emission of single quantum dots. In the second part, we present the results on type-II InP/GaAs quantum dots. In this system, we observed an experimental evidence indicating that the model used to interpret the blue shift of the type-II quantum well optical emission cannot be applied to type-II quantum dots.

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